Northrop Grumman Electronic Systems–Marine Systems, Sunnyvale, Calif., is being awarded a $20.5m firm-fixed-price contract to design and produce replacement gears for the propulsion system in the Navy's four T-AOE 6-class fast combat support ships, USNS Supply (T-AOE 6), USNS Rainier (T-AOE 7), USNS Arctic (T-AOE 8) and USNS Bridge (T-AOE 10). The new hardware will replace components of the ships' main reduction gear, which converts and transmits engine power to the propeller. Fast combat support ships provide fuel, ammunition, food and other cargo to U.S. Navy ships at sea worldwide. The contract includes five options for installation support and one option for the purchase of additional hardware, which, if exercised, would bring the cumulative value of this contract to $22,395,475. Work will be performed at various locations worldwide and is expected to be completed by Sep. 2013. Contract funds will not expire at the end of the current fiscal year. This contract was competitively procured with two offers received. The solicitation was issued on an unrestricted basis, using full and open competitive procedures via the Military Sealift Command, Navy Electronic Commerce Online and Federal Business Opportunities web pages. The U.S. Navy's Military Sealift Command, Washington, D.C., is the contracting activity (N00033-08-C-7501).